Parslow



Paterited 0011.30, 1894.

A. H. PABSLOWf SASH FASTENER.

(No Model.)

UNITED TATES SATENT Force...

ALFRED HOWARD PARSLQW, OF TAMPA, FLORIDA.

SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 528.208, dated October30, 1894.

Application filed March 31, 1893.

To aZZ whom it may concern:

Be it known that I, ALFRED HOWARD PARSLOW, a citizen of the UnitedStates, residing at Tampa, in the county of Hillsborough and State ofFlorida, have invented a new and useful Window-Sash Lock and LiftCombined, of which the following is a specification.

My invention relates to an improvement in sash looks that are fastenedon the sash of a window, and lock and rest on or in the frame of thewindow, or part of it and the objects of my improvement are,first, toprovide a secure lock and fastening for a window when closed or shutdown; second, to provide a catch or rest for the sash when open and atdesired points for any space of opening; third, to combine in themechanism of the lock and catch an action whereby the act of lifting upor pulling down of the window sash operates in releasing the lockorcatch from its resting point at the same time and by the samemovement, and the ceasing of the action of raising up or pulling downrestores the lock or catch to its looking or resting point. I attainthese objects by the mechanism illustrated in the accompanying drawings,in which- Figure 1 is a view of the sash lock, showing it entire withinits case, also showing the lift ing and pulling down knob with itsrunning slot; also the bolt projecting from the face of the lock. Fig. 2is a view of the interior and working mechanism of the sash lock andcatch, and its position on the window sash together with the rest, andshowing the lock ata point of rest and locked. Fig. 3 is a verticalsection of the lock on the line marked S. N., in Fig. 2, showing theraising and lowiiring knob projecting from the front of the ock. Similarletters refer to similar-parts throughout the several views.

The window sash on which the lock is fastened is marked by the letters,a. a. a. a. a., in Fig. 2, and the mechanism is comprised in the knob,marked F.; the geared upright plate marked 0.0.; the two geared halfwheels, marked A. A.; the two springs marked e. e. and e. e., at the topand bottom of the said plate 0. 0., and half wheels, A. A. the

Serial No. 468.610. (No model.)

geared bolt marked B.; and the resting block marked D.

The clasp F. is securely fixed in the plate 0. 0. at the point marked K,Fig. 2, and it projects from the front of the plate and outside the bodyof the look as shown in Fig. 3. By raising up the clasp F. the plate 0.0. is raised too, and the edge of the plate is geared and fitting intothe gearing of the upper half wheel, A. it turns this half wheel as itrises, and the upper half wheel A. Its gearing fitting into the gearingon the upper edge of the bolt, B., draws the bolt back and leaves thewindow sash free to rise. At the same time, the gearing of the loweredge of the bolt, B., fitting into the gearing of the lower half wheel,A., turns that half wheel in the same direction as the upper half wheel,A., making the action of the mechanism regular and balanced. When theclasp, F., is raised and with it the plate, 0.0., causing the mechanismto act as aforesaid, the plate, 0. 0., at its upper end, and the twohalf wheels, A.

e. a, and e. 6., upper and lower, Fig. 2, which are secured in thespaces as shown by being slotted into the two half wheels at pointsmarked a and n, Fig. 2, and in the two small blocks marked i'and "5.,Fig. 2. On release of the knob, F., the upper spring, e. e., forces backthe plate, 0. 0., and that and the spring, together with the lowerspring, 6. e., force round the two half wheels, A. A., and they, the twohalf wheels, their gearing fitting into the gearing of the bolts, B.,together operate and force back and return the bolt, B., toits place ofrest.

By reversing the action of raising the sash and pulling it down by theclasp, F., the mechanical action obtained is precisely similar.

The check to the raising or lowering of the plate, 0. 0., by the clasp,F., is regulated and decided by the shoulders of the running slot,marked J. J. Figs. 1 and 3.

To facilitate, the easy and perfect motion to the action of the bolt,B., where it projects beyond the face of the lock, it is bev: eled onits upper and lower edges as shown at point marked H., Fig. 2; and theblock, D., is also beveled on its upper and lower edges.

A., together operate against the two springs,

The block, D., is fastened on the stop of the window frame,-the line ofwhich stop is marked g. 9., Fig. 2,and is shown on drawings at thebottom of the window frame. Other blocks, as block, D., are fastened onthe stop at points above for resting the sash when raised.

The teeth 0 at each end of the plate 0 are made shorter than the othersso as to permit the teeth of the half wheels A with the exception of theteeth P of the same A to clear the said short teeth 0 as said halfwheels move in opposite directions.

The two teeth marked 13. and p. Fig. 2, on the upper and lower wheels A.and A are longer than the other teeth of the said half wheels to bettermeet and be moved by the shorter teeth, 0. and O. of the plate G. C.when that is raised or pulled down.

What-I claim as my invention, and desire 20 to secure by Letters Patent,is-

The combination in a sash fastener of the operating knob, the slidingrack plate, the springs engaging said rack plate, the half wheels, withwhich said half wheels intermesh and the fastening blocks secured to thestop of the window frame substantially as specified;

ALFRED HOWARD PARSLOW.

Witnesses:

H. E. CRANE, GEO. F. CHAMBERLAIN.

the sliding bolt provided with teeth 25

